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. 2019 May 28;19:645. doi: 10.1186/s12889-019-7004-x

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© The Author(s). 2019

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 2 — Description of HR-HPV genotype prevalence at baseline (a) and at follow-up (24 months after baseline) (b). Data corresponding to the anal site are on the left and data corresponding to the oral site are on the right: the prevalence is expressed as proportion respect to the number of subjects with HPV testing available (165 anal samples at baseline and at follow-up, 106 oral samples at baseline and 162 oral samples at follow-up). HR-HPV: high risk HPV genotypes. HPV: human papilloma virus